@article{MZM_2001_69_1_a9,
     author = {S. V. Chispiyakov},
     title = {On $c${-Formations} with {Nilpotent} {Premaximal} $c${-Subformations}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {113--121},
     year = {2001},
     volume = {69},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_1_a9/}
}